Safety device for elevators.



A. BARASH.

SAFETY DEVICE FOB. ELEVATORS. APPLICATION FILED MAY 6, 1914.

1,129,536. Patented'Feb. 23, 1915.

2 SHEETSSHEET 1.

"'HE NOkRls PETERS 60., PHOTO-LITHO., WASHINGTON. D4 C.

A. BARASH.

SAFETY DEVICE FOR ELEVATORS.

APPLICATION FILED 1mm, 1914,

1,129,53fi. Patented Feb. 23, 1915.

2 SHEETSSHBET Z,

THE NORRIS PETERS CO., PHOm-LITHQ, WASHING TON, D. C

ANDREW BALRASH, 0F GLOUSTER, OHIO.

SAFETY DEVICE FOR ELEVATORS.

Specification of Letters Patent.

Patented Feb. 23, 1915.

Application filed May 6, 1914. Serial No. 836,761.

To all whom it may concern Be it known that I, ANDREW BAnAsH, a subjectof the King of Hungary, resi ding at Glouster, in the county of Athensand State of Ohio, have invented certain new and useful Improvements inSafety Dev ces for Elevators, of which the following is a specification.

This invention relates to certain new and useful improvements in safetydevices for elevators.

The primary object of this invention is to provide an elevatorattachment for automatically supporting the car in the event of theaccidental breaking of the hoisting cable.

A further object is to provide an automatic shaft-engaging means upon anelevator car and whereby the carwill be supported within the shaft uponthe breaking of the hoisting cable, thus preventing the car fromdropping and avoiding accidents to the contents of the car.

A still further object is to provide a means upon an elevator caradapted for automatically engaging opposite racks within the shaft inthe event of a breaking of the hoisting cable and such means beingmanually releasable from the interior of the car for effecting a releasefrom the rack and allowing the car to descend a desirable distance to afloor landing door.

With these general objects in view and others that will appear as thenature of the invention is better understood, the same consists in thenovel combination and arrangement of parts hereinafter fully described,illustrated in the accompanying drawings, and pointed out in theappended claims.

In the drawings forming a part of this application and wherein likenumerals of reference designate corresponding parts throughout theseveral views :-Figure 1 is a vertical transverse sectional view takenthrough an elevator car, the opposite vertical beams and racks of theelevator shaft be; ing shown in side elevation. Fig. 2 is a similar viewof a portion of the same illustrating the locking elements as positionedwhen the cable is broken. Fig. 3 is a top plan view of the structureshown in Fig. 2. and, Fig. 4 is a perspective view of one of the lockingbolts detached.

Referring more in detail to the drawings, the opposite beams 10 areillustrated to represent vertically positioned beams upon opposite sideswithin an elevator shaft and provided on their inner faces with toothedracks 11. The elevator car 12 being positioned for vertical movementwithin the elevator shaft is provided with channel brackets 18 spanningthe racks 11 and adapted for guiding the car in its vertical movementwithin the shaft. Strap brackets 14 are positioned upon the top of thecar at theopposite sides thereof and each is provided with a slidablyengaging bolt 15 therein and adapted for a sliding movement transverselyof the car and in alinement with the racks 11 and whereby the inclinedouter tooth 16 of each of said bolts is adapted to engage a tooth of theadjacent rack when said bolts are projected outwardly. Guide plates 17for said bolts are positioned inwardly of the strap brackets 14 and areprovided with central rectangular perforations 18 adapted for thesliding reception of the inwardly-projecting arms 19 of the bolts, whicharms are rectangular in cross-section. The plates are also provided withcircular perforations 20 upon opposite sides of the perforation 18 andthrough which perforations 20 are adapted to slide theinwardly-projecting pins 21 carried by the bolts '15 upon opposite sidesof the arms 19. Helical expansion springs '22 are positioned surroundingthe pins 21 and between the bolts and the outer faces of the guideplates 17. and whereby the bolts are normally outwardly influenced forengaging the bolts with the rack teeth.

The hoisting cable 28 for the elevator car is connected to the innerends of the bolt arms 19 by means of cords 24 which pass over pulleys 25mounted upon a bracket 26 substantially centrally-positioned upon thetop of the car and mid-way between the guide plates,17. By thisarrangement, it is designed to support the car by means of the cable 23and while the car is so supported, the weight thereof is suspended uponthe cords 24, thereby drawing inwardly the bolts against the force ofthe springs 22 and placing the springs under extreme tension at alltimes during the operation of the car.

It will be evident that with the elements thus described positioned asillustrated in Fig. 1, that a severing of the cable 23 results inreleasing the cords 24: and allowing the action of the springs 22 toproject the bolts 15 for automatic engagement with the teeth of theracks 11 as illustrated in Fig. 2. A central opening 27 is provided inthe roof 28 of the car and through which two tachment as the cable cords24 while said cords 29 pass over rollers 30 mounted in the bracket 26.An angular lever 31 is pivoted within the car to the roof thereof upon abracket 32 and has the lower ends of the two cords 29 which projectthrough the roof opening 27 secured to the terminal perforation 33 ofsaid lever while the opposite end of said lever is provided with anoperating handle 34.

The automatic operation of the engagement of the car bolts with theshaft racks for supporting the car when the hoisting cable is broken hasalready been fully described.

The elements are positioned as illustrated in Fig. 2, whenever thesupporting cable is accidentally broken and this occurrence may happenat any point of travel of the car, such as at points between floorlandings. When so positioned, access to the interior of the car isextremely difficult and it is often desired to shift the car to aposition opposite the door of one of the floor landings for the purposeof allowing the passengers or freight to leave the car. This may bereadily accomplished by shifting the lever '31 by grasping the handle34, exerting a pulling force upon the cords 29 and thereby drawing thebolts 15 inwardly out of engagement with the rack teeth while as will beevident, when the handle is released, the springs 22 again automaticallyengage the bolts with the shaft racks.

While the form of the invention herein shown and described is what isbelieved to be a preferred embodiment thereof, it is nevertheless to beunderstood that various forms and modifications may be resorted to whichfall within the spirit and scope of the invention as claimed.

What I claim as new is 1. In combination with an elevator shaft havingoppositely-positioned toothed racks and a car vertically movabletherebetween, of oppositely-positioned strap brackets upon the roof ofsaid car, outwardly projectable bolts slidably-mounted within saidbrackets, guide plates positioned inwardly of said brackets and eachprovided with a rectangu lar central perforation andoppositely-positioned circular perforations, said bolts provided with acentral inwardly-extending arm and with oppositely-positionedinwardly-projecting pins adapted for sliding reception within theperforations of said plates of corresponding dimensions, expansionsprings surrounding said pins and engaging between said plates andbolts, a bracket centrally-positioned upon the roof of the car, rollersmounted in said brackets, a hoisting cable, cords secured be.- tween thelower end of said cable and the inner ends of said bolt arms, a pivotedlever within said car provided with an operating handle, the roof ofsaid car provided with a central opening therethrough beneath the saidbracket, and connecting cords extending through said roof opening andsecured between the inner end of said lever and the inner ends of saidbolt arms.

2. A device of the class described comprising vertically-positionedelevator shaft beams, inwardly projecting oppositely-positioned toothedracks upon said beams, a car between said racks having av centralopening in the roof thereof, a bracket mounted upon the roof of said carover the said opening, two upper and two lower pulleys journaled in saidbracket, oppositelypositioned bolts slidably-mounted upon the roof ofsaid car in engaging alinement with said racks, expansion springsengaging said bolts, a hoisting cable, cords connected between saidcable and passing over the upper ones of said rollers and connected tosaid bolts with said springs under compression and said bolts disengagedfrom said racks during the operation of the car, an operating leverwithin the car, and connecting cords extending through said roof openingand over the lower one of said rollers and connected between one end ofsaid lever and said bolts.

In testimony whereof I afiix my signature in presence of two witnesses.

ANDREW BARASH.

Witnesses:

J OHN Koorns, Jon MOKNAR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner ot'ratents.

Washington, I). C.

